Question

From a point on the ground a particle is projected with initial velocity u , such that its horizontal range is maximum. The magnitude of average velocity during its acsent

Answer 1

Average of the speed/ velocity can be found in two ways.

By one method: u * sqrt(5/8)

By the more appropriate method: u* [ sqrt2 + Ln(1+ sqrt2) ] /sqrt(8)

Solutions in the two pictures enclosed..